--- nono/vm/scc.h	2026/04/29 17:04:45	1.1.1.4
+++ nono/vm/scc.h	2026/04/29 17:05:09	1.1.1.9
@@ -4,27 +4,26 @@
 // Licensed under nono-license.txt
 //
 
+//
+// SCC (Z8530)
+//
+
 #pragma once
 
 #include "device.h"
-#include "upd7201.h"
+#include "mpscc.h"
 
-class SCCDevice
-	: public uPD7201Device
+class SCCDevice : public MPSCCDevice
 {
-	using inherited = uPD7201Device;
- private:
+	using inherited = MPSCCDevice;
+
 	static const int baseaddr = 0xe98000;
 
  public:
 	SCCDevice();
 	virtual ~SCCDevice() override;
 
-	void ResetHard() override;
-
-	// XXX 親の同名メソッドと名前分けたほうがいいか
-	uint8 ReadCtrl(struct SIO::channel *chan) override;
-	void WriteCtrl(struct SIO::channel *chan, uint32 data) override;
+	void ResetHard(bool poweron) override;
 
 	// 割り込みアクノリッジ
 	int InterruptAcknowledge();
@@ -32,12 +31,63 @@ class SCCDevice
  protected:
 	// BusIO インタフェース
 	static const uint32 NPORT = 4;
-	uint64 Read(uint32 addr);
-	uint64 Write(uint32 addr, uint32 data);
-	uint64 Peek(uint32 addr);
+	uint64 Read(uint32 offset);
+	uint64 Write(uint32 offset, uint32 data);
+	uint64 Peek(uint32 offset);
+
+	void Tx(int ch, uint32 data) override;
+	uint GetHighestInt() const override;
 
  private:
-	void Interrupt() override;
+	// 指定のレジスタ名を返す
+	const char *CRName(const MPSCCChan&, int n) const override;
+	const char *SRName(const MPSCCChan&, int n) const override;
+
+	// WR, RR のほうが通りがいいので結局用意する
+	const char *WRName(const MPSCCChan& chan, int n) const {
+		return CRName(chan, n);
+	}
+	const char *WRName(const MPSCCChan& chan) const {
+		return inherited::CRName(chan);
+	}
+	const char *RRName(const MPSCCChan& chan, int n) const {
+		return SRName(chan, n);
+	}
+	const char *RRName(const MPSCCChan& chan) const {
+		return inherited::SRName(chan);
+	}
+
+	void ResetChannel(MPSCCChan&);
+
+	uint8 ReadCtrl(MPSCCChan&);
+	void WriteCtrl(MPSCCChan&, uint32 data);
+	uint8 PeekCtrl(const MPSCCChan&) const;
+
+	uint8 GetWR1(const MPSCCChan&) const;
+	uint8 GetWR9() const;
+	uint8 GetRR0(const MPSCCChan&) const;
+	uint8 GetRR2B() const;
+	uint8 GetRR3A() const;
+
+	void WriteWR0(MPSCCChan&, uint32 data);
+	void WriteWR1(MPSCCChan&, uint32 data);
+	void WriteWR2(uint32 data);
+	void WriteWR5(MPSCCChan&, uint32 data);
+	void WriteWR9(uint32 data);
+	void WriteWR10(MPSCCChan&, uint32 data);
+	void WriteWR11(MPSCCChan&, uint32 data);
+	void WriteWR12(MPSCCChan&, uint32 data);
+	void WriteWR13(MPSCCChan&, uint32 data);
+	void WriteWR14(MPSCCChan&, uint32 data);
+	void WriteWR15(MPSCCChan&, uint32 data);
+
+	void SetXC(MPSCCChan&);
+
+	DECLARE_MONITOR_CALLBACK(MonitorUpdate);
+	void MonitorUpdateCh(TextScreen&, int ch, int xbase, int ybase);
+
+	static const char * const wrnames[32];
+	static const char * const rrnames[32];
 };
 
-extern std::unique_ptr<SCCDevice> gSCC;
+extern SCCDevice *gSCC;